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12238249220 = 2251932205919
BaseRepresentation
bin10110110010111010…
…01101110100000100
31011120220102110211122
423121131031310010
5200030442433340
65342220053112
7612163254611
oct133135156404
934526373748
1012238249220
11521019985a
122456694198
1312006217b2
14841519508
154b9632db5
hex2d974dd04

12238249220 has 24 divisors (see below), whose sum is σ = 27052972800. Its totient is φ = 4637652192.

The previous prime is 12238249217. The next prime is 12238249259. The reversal of 12238249220 is 2294283221.

12238249220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16102580 + ... + 16103339.

It is an arithmetic number, because the mean of its divisors is an integer number (1127207200).

Almost surely, 212238249220 is an apocalyptic number.

12238249220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12238249220 is an abundant number, since it is smaller than the sum of its proper divisors (14814723580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12238249220 is a wasteful number, since it uses less digits than its factorization.

12238249220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32205947 (or 32205945 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 12238249220 in words is "twelve billion, two hundred thirty-eight million, two hundred forty-nine thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 32205919 64411838 128823676 161029595 322059190 611912461 644118380 1223824922 2447649844 3059562305 6119124610 12238249220